The study aims to study the effect of French-style contrast training on developing rebound strength and some transitional speed measurements for young field hockey players. The researchers used the experimental approach, adopting an experimental design for two groups, one experimental and the other control, using pre- and post-test measurements for each group. The research sample was chosen intentionally and included (26) young field hockey players born in (2006) registered with the Egyptian Hockey Federation for the 2024/2025 season. They were divided into (10) players for the experimental group, (10) players for the control group, and (6) players for the exploratory study. The researchers added the training program for differentiated training using the French method (8 weeks, at a rate of (2) training units/week) as additional training units to the basic training program The French-style contrast training has a positive effect on the development of rebound strength and some transitional speed measurements (10m high start with a bat, 30m high start with a bat, 30m dribbling speed, 30m straight line dribbling speed) of young field hockey players. The researchers recommend using the French method of contrast training to develop rebound strength and some transition speed measurements for field hockey players of both genders and at different age levels during different seasons. Conduct further scientific studies and research targeting the integration of French-style contrast training into strength and muscle endurance training programs in field hockey. The results of this study will also be directed to field hockey coaches so they can benefit from its findings.